############################################################################
# Copyright (C) SchedMD LLC.
############################################################################
import re
import shutil

import pytest

import atf


# Setup
@pytest.fixture(scope="module", autouse=True)
def setup():
    atf.require_slurm_running()
    if shutil.which("qsub") is None:
        pytest.skip(
            "This test requires the contribs to be built and for qsub to be in your path",
            allow_module_level=True,
        )


def test_output(tmp_path):
    """Verify that qsub -o and -e results in creation of output and error files"""
    file_in = str(tmp_path / "job.in")
    atf.make_bash_script(
        file_in,
        """echo out
echo err >&2
""",
    )
    file_out = str(tmp_path / "job.out")
    file_err = str(tmp_path / "job.err")

    output = atf.run_command_output(
        f"qsub -l walltime=1:00 -o {file_out} -e {file_err} {file_in}", fatal=True
    )
    job_id = int(match.group(1)) if (match := re.search(r"(\d+)", output)) else None
    assert job_id is not None, "A job id was not returned from qsub"
    assert atf.wait_for_job_state(job_id, "DONE"), f"Job ({job_id}) did not run"
    assert atf.wait_for_file(file_out), f"Output file ({file_out}) was not created"
    with open(file_out) as f:
        assert re.search(r"out", f.read()), "Stdout was not written to output file"
    assert atf.wait_for_file(file_err), f"Error file ({file_err}) was not created"
    with open(file_err) as f:
        assert (
            re.search(r"err", f.read()) is not None
        ), "Stderr was not written to error file"